Power-supply LEDsThe ac and dc power LEDs on a power supply provide status information about thatpower supply. The following illustration shows the location of the ac and dc powerLEDs.Note: The following illustration shows the rear of the server with two hot-swappower supplies installed. A server with a single fixed power supply will haveone power supply and no fans on the rear of the server.Fan 5 LEDFan 6 LEDPower supply 1Power supply 2AC power LEDAC power LEDDC power LEDDC power LEDFor more information about the ac and dc power LEDs, see “Power-supply LEDerrors” on page 116.Updating the BMC firmwareUse the baseboard management controller (BMC) firmware update utility program todownload a BMC firmware update or a sensor data record/field replaceable unitupdate. The firmware update utility program updates the BMC firmware orSDR/FRU data only and does not affect any device drivers.Go to http://www.ibm.com/support/ to download the utility program; then, copy theflash.exe file to a firmware update diskette.Note: To ensure proper server operation, be sure to update the server BMCfirmware code first before updating the BIOS code.Chapter 5. Diagnostics 95
